Details

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BUY FAN6754MRMY https://www.utsource.net/itm/p/4449771.html
Highly Integrated Green-Mode PWM Controller

Parameter	Symbol	Min	Typ	Max	Unit	Notes
Input Voltage Range	VIN	4.5	-	28	V	Operating range
Output Voltage Range	VOUT	0.9	-	13.5	V	Programmable with external resistor divider
Switching Frequency	fSW	200	600	1000	kHz	Adjustable with external resistor
Load Current	ILOAD	-	0.1	1.5	A	Maximum output current
Efficiency (Typical)	η	-	90	-	%	At 5V input, 3.3V output, 1A load
Quiescent Current	IQ	-	100	-	μA	Shutdown mode
Dropout Voltage	VDROPOUT	-	0.3	-	V	At full load
Soft-Start Time	tSS	2.2	-	22	ms	Adjustable with external capacitor
Enable Input Voltage	VEN	0.9	-	1.8	V	Threshold for enabling the device
Thermal Shutdown Temperature	TSD	-	160	-	°C	Device shuts down to prevent damage
Operating Temperature	TOPR	-40	-	125	°C	Ambient temperature range
Storage Temperature	TSTG	-65	-	150	°C	Storage temperature range

Instructions:

1. Power Supply Connection:

   • Connect the input voltage (VIN) to the power supply within the specified range (4.5V to 28V).
   • Ensure the output voltage (VOUT) is set using an external resistor divider to achieve the desired output voltage.

2. Switching Frequency Adjustment:

   • Adjust the switching frequency (fSW) by connecting an external resistor between the FREQ pin and GND. The typical range is from 200kHz to 1000kHz.

3. Load Current:

   • The device can support a maximum load current of 1.5A. Ensure the load does not exceed this limit to avoid overheating or damage.

4. Efficiency:

   • For optimal efficiency, operate the device at the typical operating conditions (5V input, 3.3V output, 1A load).

5. Quiescent Current:

   • In shutdown mode, the quiescent current is typically 100μA. Use the EN pin to control the enable state of the device.

6. Dropout Voltage:

   • The dropout voltage is typically 0.3V at full load. Ensure the input voltage is sufficiently higher than the output voltage to maintain regulation.

7. Soft-Start Time:

   • Adjust the soft-start time (tSS) by connecting an external capacitor to the SS pin. The typical range is from 2.2ms to 22ms.

8. Enable Input:

   • The device will start operating when the voltage on the EN pin exceeds 0.9V. Use this pin to control the enable/disable state of the device.

9. Thermal Shutdown:

   • The device will automatically shut down if the junction temperature exceeds 160°C to prevent damage.

10. Operating and Storage Temperature:

    • Ensure the ambient temperature is within the operating range (-40°C to 125°C) and store the device within the storage temperature range (-65°C to 150°C).

For detailed application circuits and further information, refer to the datasheet provided by the manufacturer.

(For reference only)